Grey seal (Halichoerus grypus) interacting with diver underwater, Lundy Island, Bristol Channel, England, UK, May. Photographer quote: 'Seal photography is a very interactive process, with the seals just as curious about us and our chewy underwater cameras. They always initiate the encounter, not least because they are certainly masters of the underwater world.' Did you know? 40% of the global grey seal population is found in UK waters.